Human Biology Year 12 Exam Questions and Answers

Human Biology Year 12 Exam Questions
and Answers



Homeostasis - Correct Answers -Maintenance of a relatively constant internal
environment

Tolerance limits - Correct Answers -Upper and lower limits of the body that will not
affect body function

Types of receptors - Correct Answers -Thermoreceptors, osmoreceptors,
chemoreceptors, mechanoreceptors and nocioceptors

Thermoreceptor - Correct Answers -Sensitive to temperature to maintain core body
temp

Nervous system function - Correct Answers -Communication in the centre of the body

Functional types of neurons - Correct Answers -Sensory, motor and inter neurons

Structural types of neurons - Correct Answers -Unipolar, bipolar and multipolar

Sensory neuron - Correct Answers -Carries impulse from receptor towards the CNS

Motor neuron - Correct Answers -Carries impulse from CNS to effector

Osmoreceptor - Correct Answers -Sensitive to small changes in bodily fluids (osmotic
pressure)

Chemoreceptor - Correct Answers -Stimulated by certain chemicals

Mechanoreceptor - Correct Answers -AKA touch receptor that is sensitive to touch,
pressure and vibration

Nocioceptor - Correct Answers -AKA pain receptor that is stimulated by damage to the
tissues

Diagram representing feedback loop - Correct Answers -Stimulus response feedback
loop